Question

Activity 3: RAISE ME GENTLY!
Directions: Do the activity carefully. Then, answer the questions that follow. Write your answer on a separate
sheet of
paper

Problem: Compare static friction acting on different objects

Materials: Hardcover big book three objects of about equal mass/weight (e.g. a smooth 10-peso coin, a snack-
size wrapped biscuit, and a small pencil sharpener)

Procedure:
Place the big book on a table.
Place the three objects on the edge of the big book that is opposite from the binding. If you have
them positioned correctly, the items will slide toward you when the big book cover is lifted.
Very slowly and gently raise the big book cover. The objects on the edge will begin to slide toward
you. Notice the order in which they begin to make their slide.
Investigate:
1. Which object had the least static friction acting on it?
2. Which object had the most static friction?
3. If you want to increase the amount of static friction on these objects, what could you do?
3. What could you do to decrease the static friction?​
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Answer 1

Answer:

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